US4496811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foot switch safety enclosure
Assignee: Individual
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Filing: 1983-04-15
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Granted: 1985-01-29
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Expires: 2003-04-15
Abstract
Abstract A safety enclosure for enclosing a foot operated switch so as to prevent accidental actuation of the switch. The enclosure is open at the top and includes upstanding walls within which the switch is mounted. One of the walls is pivotally movable by a positive act of the operator against the urging of a closure spring from an upstanding position to a lowered position to enable the operator to bring his foot into pressural operating engagement with the switch.
Inventors
- 👤 Lawrence F. Irwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:54
CPC Classifications
H; H01; H01H; H01H3/00; H01H3/22; H01H3/24; F; F16; F16P; F16P1/00; H01H3/02; H01H3/14; H01H3/20
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
151 words
A foot operated safety enclosure in combination with a foot operated switch comprising: (a) a housing for partially enclosing the switch including: (1) a base member for supporting the switch; and (2) generally upstanding front, rear and side walls connected to said base, said walls extending above the uppermost part of the switch with one of said walls being inwardly sloping and pivotally movable relative to said base member for movement by the foot of the user from a first normally upstanding position to a second lowered position in response to a rearward and downward force being exerted on the upper edge thereof whereby as said pivotally movable wall is moved into said second lowered position the foot of the user will move downwardly into operable engagement with the switch; and (b) biasing means for yieldably resisting movement of said one of said walls from said first to said second position.
Claim 2
Dependent Claim
151 words
A foot operated safety enclosure in combination with a foot operated switch comprising: (a) a housing for partially enclosing the switch including: (1) a base member for supporting the switch; and (2) generally upstanding front, rear and side walls connected to said base, said walls extending above the uppermost part of the switch with one of said walls being inwardly sloping and pivotally movable relative to said base member for movement by the foot of the user from a first normally upstanding position to a second lowered position in response to a rearward and downward force being exerted on the upper edge thereof whereby as said pivotally movable wall is moved into said second lowered position the foot of the user will move downwardly into operable engagement with the switch; and (b) biasing means for yieldably resisting movement of said one of said walls from said first to said second position.
Claim 3
Dependent Claim
21 words
A safety enclosure as defined in claim 1 in which said inwardly sloping wall is hingedly connected to said base member.
Claim 4
Dependent Claim
41 words
A safety enclosure as defined in claim 2 in which said biasing means comprises an elongated coil spring one end of which is connected to said inwardly sloping wall and the other end of which is connected to a side wall.
Claim 5
Dependent Claim
48 words
A safety enclosure as defined in claim 2 in which said biasing means comprises a torsion spring mounted on said housing and so constructed and arranged that movement of said inwardly sloping wall from said first position toward said second position will impart torsional forces on said spring.
Claim 6
Dependent Claim
174 words
A safety enclosure in combination with a foot operated air actuated switch comprising: (a) a housing for partially enclosing the switch comprising: (1) a base member for supporting the switch; (2) a pair of generally vertically extending side walls connected to said base member; (3) a generally vertical extending rear wall interconnected to said side walls and to said base member; (4) an inwardly sloping front wall hingedly connected to said base member for pivotal movement from a first normally upwardly extending position to a second lowered position in response to forces exerted by the foot of the user rearwardly and downwardly on the upper edge of said front wall, said front, rear and side walls of said housing normally extending above the uppermost portion of the switch whereby as said pivotally movable wall is moved into said second lowered position the foot of the user will move downwardly into operable engagement with the switch; and (b) biasing means for yieldably resisting movement of said front wall from said first to said second position.
Claim 7
Dependent Claim
174 words
A safety enclosure in combination with a foot operated air actuated switch comprising: (a) a housing for partially enclosing the switch comprising: (1) a base member for supporting the switch; (2) a pair of generally vertically extending side walls connected to said base member; (3) a generally vertical extending rear wall interconnected to said side walls and to said base member; (4) an inwardly sloping front wall hingedly connected to said base member for pivotal movement from a first normally upwardly extending position to a second lowered position in response to forces exerted by the foot of the user rearwardly and downwardly on the upper edge of said front wall, said front, rear and side walls of said housing normally extending above the uppermost portion of the switch whereby as said pivotally movable wall is moved into said second lowered position the foot of the user will move downwardly into operable engagement with the switch; and (b) biasing means for yieldably resisting movement of said front wall from said first to said second position.
Claim 8
Dependent Claim
33 words
A safety enclosure as defined in claim 5 in which said side walls include inwardly sloping forward edges adapted to engage said front wall when said front wall is in said first position.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-01-29 | 1988-07-30 | 1989-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-29 | 1992-07-30 | 1993-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-29 | 1996-07-30 | 1997-01-29 | $7700.00 | Window Closed / Lapsed |